diff -up gtk+-3.8.4/gtk/gtktextattributes.h.multilib gtk+-3.8.4/gtk/gtktextattributes.h
--- gtk+-3.8.4/gtk/gtktextattributes.h.multilib	2013-11-01 11:37:48.770148541 -0400
+++ gtk+-3.8.4/gtk/gtktextattributes.h	2013-11-01 11:51:00.708693132 -0400
@@ -102,12 +102,10 @@ struct _GtkTextAppearance
   guint inside_selection : 1;
   guint is_text : 1;
 
-  GdkRGBA *rgba[2];
-
-#if (defined(__SIZEOF_INT__) && defined(__SIZEOF_POINTER__)) && (__SIZEOF_INT__ == __SIZEOF_POINTER__)
-  /* unusable, just for ABI compat */
-  guint padding[2];
-#endif
+  union {
+    GdkRGBA *rgba[2];
+    guint padding[4];
+  };
 };
 
 struct _GtkTextAttributes